If the element of test is TRUE or FALSE, ifelse produces a result that has the same shape as test and is filled with elements that are either yes or no.
Syntax. if(boolean expression) / If the boolean expression is true, the statement(s) will be executed. otherwise / If the boolean expression is false, the statement(s) will be executed. The if block of code will be performed if the Boolean statement evaluates to true, else the else block of code will be executed.
The if-else condition is used to execute both the true and false parts of a condition. The if block code is run if the condition is true, and the else block code is executed if the condition is false.
The if else clause is simple to understand. You must define one or more criteria that must be met in order to run some code; otherwise, you must run other code. As a result, if the condition is met, the condition must return TRUE; otherwise, it must return FALSE.
We established a variable named x with the value 0 in the preceding example. We have two test phrases here: if (x > 0) - examines if x is greater than 0; if (x > 0) - checks if x is greater than 0. otherwise if (x 0) - determines whether x is less than zero.
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